Amorphous Silicon Metasurface-Based Polarizer near 770 nm Wavelength Regime

Luan, Wenlin; Song, Qingcheng; Yu, Xia

doi:10.1109/acp55869.2022.10088858

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Various single-layer one-dimensional (1D) gratings, acting as wire grid polarizers, have emerged as tools for customizing the polarimetric properties through metal deposition-based patterning have been reported, such as elliptical Si nanowires 9,10 , nanorods 11 , metallic grating 12,13 , and liquid-crystal guest-host 14,15 . These nanostructures provide polarization over a wide range of wavelengths, but their structural limitations restrict the enhancements of polarization properties.…”

Section: Introductionmentioning

confidence: 99%

Self-Aligned Bilayer Linear Grating Enabling Highly Enhanced Responsivity of MWIR InAs/GaSb Type-II Superlattice (T2SL) Photodetector

Kim,

Lee,

et al. 2023

Preprint

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Linear gratings polarizers provide remarkable potential to customize the polarization properties and tailor device functionality via dimensional tuning of configurations. Here, we extensively investigate the polarization properties of single- and double-layer linear grating, mainly focusing on self-aligned bilayer linear grating (SABLG), serving as a wire grid polarizer in the mid-wavelength infrared (MWIR) region. Computational analyses revealed the polarization properties of SABLG, highlighting enhancement in TM transmission and reduction in TE transmission compared to single-layer linear gratings (SLG) due to optical cavity effects. As a result, the extinction ratio is enhanced by approximately 2724-fold in wavelength 3–6 μm. Furthermore, integrating the specially designed SABLG with an MWIR InAs/GaSb Type-II Superlattice (T2SL) photodetector yields a significantly enhanced spectral responsivity. The extinction ratio of TM- to TE-spectral responsivity is enhanced by around 8775-fold. The simulation methodology and analytical analysis presented herein provide a versatile route for designing optimized polarimetric structures integrated into infrared imaging devices, offering superior capabilities to resolve linear polarization signatures.

show abstract

Section: Introductionmentioning

confidence: 99%

Self-Aligned Bilayer Linear Grating Enabling Highly Enhanced Responsivity of MWIR InAs/GaSb Type-II Superlattice (T2SL) Photodetector

Kim,

Lee,

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Simulational investigation of self-aligned bilayer linear grating enabling highly enhanced responsivity of MWIR InAs/GaSb type-II superlattice (T2SL) photodetector

Lee,

Ku,

Jeong

et al. 2024

Sci Rep

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Linear gratings polarizers provide remarkable potential to customize the polarization properties and tailor device functionality via dimensional tuning of configurations. Here, we extensively investigate the polarization properties of single- and double-layer linear grating, mainly focusing on self-aligned bilayer linear grating (SABLG), serving as a wire grid polarizer in the mid-wavelength infrared (MWIR) region. Computational analyses revealed the polarization properties of SABLG, highlighting enhancement in TM transmission and reduction in TE transmission compared to single-layer linear gratings (SLG) due to optical cavity effects. As a result, the extinction ratio is enhanced by approximately 2724-fold in wavelength 3–6 μm. Furthermore, integrating the specially designed SABLG with an MWIR InAs/GaSb Type-II Superlattice (T2SL) photodetector yields a significantly enhanced spectral responsivity. The TM-spectral responsivity of SABLG is enhanced by around twofold than the bare device. The simulation methodology and analytical analysis presented herein provide a versatile route for designing optimized polarimetric structures integrated into infrared imaging devices, offering superior capabilities to resolve linear polarization signatures.

show abstract

Amorphous Silicon Metasurface-Based Polarizer near 770 nm Wavelength Regime

Cited by 2 publications

References 9 publications

Self-Aligned Bilayer Linear Grating Enabling Highly Enhanced Responsivity of MWIR InAs/GaSb Type-II Superlattice (T2SL) Photodetector

Self-Aligned Bilayer Linear Grating Enabling Highly Enhanced Responsivity of MWIR InAs/GaSb Type-II Superlattice (T2SL) Photodetector

Simulational investigation of self-aligned bilayer linear grating enabling highly enhanced responsivity of MWIR InAs/GaSb type-II superlattice (T2SL) photodetector

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